VISION FLX2 MANUAL AUG 22,

Transcription

1 VISION FLX2 MANUAL AUG 22,

2 finding manual Step 1 Locate and mark the utility TRANSMITTER Step 2 CHECKING CABLE FOR VOLTAGE stake should be placed directly behind and in the opposite direction of the cable path. Connect the black end of the direct connection cables to the ground stake. Connect the red end of the direct connection cables on the cable to be checked. Power on. Press Frequency, and select FF. *FF is Find mode. Voltage is indicated. When voltage is greater than 25 volts, alarm sounds. 1

3 Step 3 CHECKING CABLE RESISTANCE This feature is used to determine the quality of the fault. Isolate both ends of the cable. stake should be placed directly behind and in the opposite direction of the cable path. Connect the black end of the direct connection cables to the ground stake. Connect the red end of the direct connection cables on the cable to be checked. Isolate both ends Power on. Press Frequency, and select FF. Press ADJUST. Resistance is indicated by the numerical value and the bar graph. Press ADJUST again or 30 sec. later, the display is returned to the FF. Step 4 FAULT FINDING After measurement of the resistance, fault finding power is adjusted automatically. 2

4 RECEIVER Connect the A-frame to the Receiver. A-frame Place both legs of the A-frame in the earth with the red leg pointing at the ground stake. Distance from ground stake should be approximately the same as the suspected depth of the cable. A-frame Same as depth of the cable Press and hold the Gain/Select key for one second, this will adjust the sensitivity of the Receiver and display 70.0% +/- If the Receiver displays OVER manually reduce the output on the until overload message is replaced with numbers. Note: This will be a reference number if line has multiple faults. Gain/Select. 3

5 Place the A-frame in the earth parallel along the path of the cable. The Receiver will display an arrow on the LCD. Arrow will point towards the red or blue indicator. The A-frame legs will be marked with a red or blue decal. Follow the direction the Receiver is showing (Example if the LCD is pointing towards the red indicator and the red leg of the A-frame is pointing towards the front walk forward.) Walk in this direction placing the A-frame in the earth every five to ten feet. Note: If LCD does not display arrow or signal strength A-frame is not reading signal. The A-frame may not be making contact with earth or signal is too weak due the distance from the fault point or cable path. Continue walking the cable path. When the A-frame begins to read signal the arrows and numbers will be displayed again. Pointed the Red indicator Red decal When the arrow changes directions the operator has passed the fault. Pointed the blue indicator Blue decal 4

6 Move backwards placing the A-frame in the earth every few inches when the arrow changes direction again you have reached the area of the fault. The fault point will be in the center of the A-frame. CONFIRM THE FAULT LOCATION Turn the A-frame 90 degrees perpendicular to the cable path. Place the A-frame in the earth and follow the direction the arrows are showing on the LCD. When the Arrows change direction you are over the fault. 5

7 To confirm the fault place the red leg over the suspected faulted area. Pivot the A-frame in a 360-degree circle if the indicator continually shows Red then fault is beneath the red leg. Multiple s Place both legs of the A-frame in the ground with the red leg directly over the fault point. With a line that has multiple faults, the fault that registers the highest reading on the display is the fault. That needs to be repaired. FAULT Low Resistance Earth High Resistance Earth 6

8 When doing the cable fault location work, the cable locating is possible. When being connected A-FRAME, the cable locating is possible with switching the mode to Cable locating mode. Press Peak/Null. finding mode Cable locating mode No bar-graph Yaw angle Real time depth The direction of the object line. Receiving level Operational frequency or Real time Current Move to the direction of the arrow and measure the location of the cable OUT OF RANGE Number of receiving level is blinked. Move in the direction of the arrow. Object line When going back to finding mode, press Peak/Null again. 7